It all starts with a message from a Facebook friend, claiming that the user or one of his relatives or friends has had his car stolen. The user is asking for help: "Do you know / recognize the thieves? Here are the pics [TUMBLR LINK REMOVED]."
But what the target does not know is that the message does not come from the friend - his / her account has been compromised and used to spread the malicious message and increase the chance that other users will follow the offered link (apparently different for each recipient).
"Once the user clicks on the link to the Tumblr page, they are immediately redirected to a very plausible Facebook phishing page, asking the user to log in," warns SANS ISC CTO Johannes Ullrich.
The site also asks the potential victim to enter their "secret question," and then it tries to run a java applet (possibly an exploit) before finally redirecting the victim to a spoofed Youtube page and urging him to download and install an update for "Youtube Player."
Predictably, the file offered for download is malicious - a Trojan downloader that is currently detected by less than one fourth of the AV solutions used by VirusTotal.